I remember doing this with a play I read for a class back in high school. When I was taking the test on it, I realized to my horror that I didn't know the name

I remember doing this with a play I read for a class back in high school. When I was taking the test on it, I realized to my horror that I didn't know the name of one of the main characters – it started with a distinctive letter, so that was all my brain had kept.